120131666 has 16 divisors (see below), whose sum is σ = 184550400. Its totient is φ = 58632288.

The previous prime is 120131663. The next prime is 120131701. The reversal of 120131666 is 666131021.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120131663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9791 + ... + 18333.

It is an arithmetic number, because the mean of its divisors is an integer number (11534400).

Almost surely, 2^120131666 is an apocalyptic number.

120131666 is a deficient number, since it is larger than the sum of its proper divisors (64418734).

120131666 is an equidigital number, since it uses as much as digits as its factorization.

120131666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8713.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 120131666 is about 10960.4592057085. The cubic root of 120131666 is about 493.4227468605.

Adding to 120131666 its reverse (666131021), we get a palindrome (786262687).

The spelling of 120131666 in words is "one hundred twenty million, one hundred thirty-one thousand, six hundred sixty-six".